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Influence Analysis of Si/Al on Species of Synthesizing Zeolites with Hydrothermal Method from Fly Ash

Keming Fu

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Abstract

The influence of different Si/Al,alkalinity,the crystallization temperature and time on the type and quality of zeolite with hydrothermal synthesis method from fly ash was studied.The different kinds of influencing factors were also analyzed and researched.The results showed that when Si/Al is 2.1,the main zeolite is type A,Si/Al is 2.5,the zeolite is mischcrystal of type A,P and a little X,Si/Al is 3.0 and 4.0,the main zeolite is sodalite,and it will transform into type P when alkalinity and crystallization time increased.

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What this paper is about

The influence of different Si/Al,alkalinity,the crystallization temperature and time on the type and quality of zeolite with hydrothermal synthesis method from fly ash was studied.The different kinds of influencing factors were also analyzed and researched.The results showed that when Si/Al is 2.1,the main zeolite is type A,Si/Al is 2.5,the zeolite is mischcrystal of type A,P and a little X,Si/Al is 3.0 and 4.0,the main zeolite is sodalite,and it will transform into type P when alkalinity and crystallization time increased.

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Available abstract

The influence of different Si/Al,alkalinity,the crystallization temperature and time on the type and quality of zeolite with hydrothermal synthesis method from fly ash was studied.The different kinds of influencing factors were also analyzed and researched.The results showed that when Si/Al is 2.1,the main zeolite is type A,Si/Al is 2.5,the zeolite is mischcrystal of type A,P and a little X,Si/Al is 3.0 and 4.0,the main zeolite is sodalite,and it will transform into type P when alkalinity and crystallization time increased.

Key concepts: Zeolite, Sodalite, Alkalinity, Fly ash, Hydrothermal circulation, Crystallization, Materials science, Hydrothermal synthesis

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